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Date: Sat, 12 Dec 2015 12:05:49 -0800
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
Martin KaFai Lau <kafai@...com>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.3 25/71] net/ip6_tunnel: fix dst leak
4.3-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paolo Abeni <pabeni@...hat.com>
[ Upstream commit 206b49500df558dbc15d8836b09f6397ec5ed8bb ]
the commit cdf3464e6c6b ("ipv6: Fix dst_entry refcnt bugs in ip6_tunnel")
introduced percpu storage for ip6_tunnel dst cache, but while clearing
such cache it used raw_cpu_ptr to walk the per cpu entries, so cached
dst on non current cpu are not actually reset.
This patch replaces raw_cpu_ptr with per_cpu_ptr, properly cleaning
such storage.
Fixes: cdf3464e6c6b ("ipv6: Fix dst_entry refcnt bugs in ip6_tunnel")
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
Acked-by: Martin KaFai Lau <kafai@...com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
net/ipv6/ip6_tunnel.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -177,7 +177,7 @@ void ip6_tnl_dst_reset(struct ip6_tnl *t
int i;
for_each_possible_cpu(i)
- ip6_tnl_per_cpu_dst_set(raw_cpu_ptr(t->dst_cache), NULL);
+ ip6_tnl_per_cpu_dst_set(per_cpu_ptr(t->dst_cache, i), NULL);
}
EXPORT_SYMBOL_GPL(ip6_tnl_dst_reset);
--
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